Newton's Law of Motion Problem, HELP :'(

AI Thread Summary
To solve the problem regarding the forces acting on an 8-passenger Learjet, it is essential to analyze both vertical and horizontal forces. The plane is traveling at a constant velocity, indicating that there is no acceleration in either direction. This means that the upward lift force must equal the gravitational force of 66,000 N acting downward. Additionally, since the forward thrust of 13,000 N is balanced by air resistance, this force must also equal the thrust in a steady state. Understanding these relationships is crucial for determining the lift and air resistance forces.
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Homework Statement


Assume a 8-passenger learjet has a force of gravity of 66000 N [down] acting on it as it travels at a constant velocity of 640 km/hr [W]. if the forward thrust provided by the engines is 13000 N [W], determine:

a - the upward life force on the plane
b - the force due to air resistance on the plane


Homework Equations





The Attempt at a Solution


i have absolutely no clue on how to even begin, I am so lost. please help, thanks.
 
Physics news on Phys.org
1. Is the plane accelerating the vertical direction (up or down)?
2. What does this imply about the total vertical force acting on it?

3. Is the plane accelerating in the horizontal direction?
4. What does this imply about the total horizontal force acting on it?
 

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